indefinite-integration

Question: $\int_{{}}^{{}}{\left( 1+x+\frac{{{x}^{2}}}{2\ !}+\frac{{{x}^{3}}}{3\ !}+.......... \right)\ dx=}$

1) $-{{e}^{x}}+c$

2) ${{e}^{x}}+c$

3) ${{e}^{-x}}+c$

4) $-{{e}^{-x}}+c$

Solution:

Explanation: No Explanation

Fundamental integration

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